CN113091952A - 3D printing post-processing temperature measuring device and method - Google Patents
3D printing post-processing temperature measuring device and method Download PDFInfo
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- CN113091952A CN113091952A CN202110390358.XA CN202110390358A CN113091952A CN 113091952 A CN113091952 A CN 113091952A CN 202110390358 A CN202110390358 A CN 202110390358A CN 113091952 A CN113091952 A CN 113091952A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010146 3D printing Methods 0.000 title claims abstract description 18
- 238000012805 post-processing Methods 0.000 title description 8
- 239000004576 sand Substances 0.000 claims abstract description 36
- 239000011521 glass Substances 0.000 claims abstract description 21
- 239000011324 bead Substances 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 238000004861 thermometry Methods 0.000 claims 2
- 238000005266 casting Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013551 empirical research Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000000110 selective laser sintering Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention discloses a device and a method for measuring temperature after 3D printing, comprising the following steps: the temperature measuring device comprises a sensor fixing frame, a temperature measuring cable, a temperature display and a temperature sensor; the temperature sensors are arranged in a plurality of numbers and are uniformly distributed on the sensor fixing frame in a covering manner; each temperature sensor is connected with a temperature measuring cable, and the free end of the temperature measuring cable, which is far away from the temperature sensor, is connected with the temperature display and used for checking the temperature of the temperature sensor in real time. The method realizes the quantitative relation between the burying depth of the 3D printing sand mold glass beads and the baking time, can accurately master the baking time required by the burying depth of any 3D printing sand mold, avoids inaccurate master of the baking time, reduces the probability of insufficient post-treatment strength of the 3D printing sand mold caused by inaccurate master of the casting baking time, and finally improves the reliability of sand mold casting.
Description
Technical Field
The invention relates to the field of sand mold additive manufacturing post-treatment processes, in particular to a 3D printing post-treatment temperature measuring device and method.
Background
The post-baking strengthening of the 3D printing sand mold is the most important process link in the sand mold additive manufacturing post-treatment process, determines the strength of the sand mold after treatment, influences the success rate of sand mold casting, and is widely applied to the post-treatment process link of the selective laser sintering formed part. The process control of baking reinforcement directly influences sand mold casting performance, influences sand mold casting molding rate, see its importance, the tradition method is usually through groping the baking time length to the baking reinforcement of 8 word standard samples of sand mold, then test sand mold intensity, but print sand mold spare size at every turn and be different, it is different to lead to 3D to print the sand mold and need bury the glass pearl degree of depth, consequently, sand mold baking temperature and time set up also differently, so the aftertreatment process parameter is not general, need to study again after changing the model at every turn and bake temperature and time, greatly influenced production efficiency.
At present, temperature control generally adopts an experience mode of groping, firstly, a temperature control time length is roughly set according to the size of a sand mould piece, then, after baking is finished, whether the sand mould strength is enough or not is tested, the baking time length is adjusted according to the result of testing the sand mould strength until the baking strength is enough and the baking is not excessive, after sand mould pieces with different sizes are printed, the groping process needs to be repeated, baking rework and manpower and electric energy consumption influence the processing efficiency, and the execution of production planning is not facilitated; in addition, inaccurate control exists in the baking time length of the sand mould part through empirical research and control, the strength of the sand mould is insufficient or the sand mould is over baked easily after baking, and finally casting is not successful, and the process is unstable and immature.
Disclosure of Invention
The invention aims to provide a 3D printing post-processing temperature measuring device and method, which solve the problem of inaccurate parameter setting of the traditional post-processing technology depending on experience, improve the consistency of the post-processing quality of sand molds, further shorten the manufacturing period and improve the production efficiency.
The invention adopts the following technical scheme for realizing the aim of the invention:
the invention provides a 3D printing post-processing temperature measuring device, which comprises: the temperature measuring device comprises a sensor fixing frame, a temperature measuring cable, a temperature display and a temperature sensor;
the temperature sensors are arranged in a plurality of numbers and are uniformly distributed on the sensor fixing frame in a covering manner;
each temperature sensor is connected with a temperature measuring cable, and the free end of the temperature measuring cable, which is far away from the temperature sensor, is connected with the temperature display and used for checking the temperature of the temperature sensor in real time.
Furthermore, the sensor fixing frame comprises a plurality of connecting plates which are combined and connected to form a square space structure.
Further, the connecting plate includes diaphragm, riser and fixed plate, evenly offer on diaphragm and the riser be used for the equipment of sensor mount and the hole of temperature sensor installation.
Further, the length of diaphragm is 600mm, the width is 20mm, thickness is 3mm, the length of riser is 600mm, the width is 20mm, thickness is 5mm, the length of fixed plate is 600mm, the width is 30mm, highly is 30 mm.
The invention provides a 3D printing post-processing temperature measurement method, which comprises the following steps:
placing the sensor fixing frames with the temperature sensors in the glass bead burying groove, burying the sensor fixing frames by using the glass beads, and leading the temperature measuring cables out of the burying groove;
recording the position data of each temperature sensor buried in the glass beads;
opening the oven to set a preset baking temperature, connecting the temperature sensor with the temperature display at intervals of a set time, recording the displayed temperature, and observing the speed of temperature rise at each position inside the buried glass beads, and the time and constant temperature value required for the temperature sensor at each position to reach a constant temperature value;
determining the temperature condition of the position of each temperature sensor and the time required for reaching the required temperature by referring to the difference between the constant temperature value and the preset temperature;
setting different burying heights of the glass beads, recording the time and the actual temperature when the temperature of the temperature sensor at each position on the sensor fixing frame reaches constant, forming a database according to the measured real-time temperature and time, printing the burying height of the sand mold according to 3D, finding the corresponding burying height, and determining the post-treatment baking temperature and time.
Further, the distance from the outermost temperature sensor to the inner wall of the glass bead burying groove is measured to record the position data of each temperature sensor buried in the glass bead.
Furthermore, the temperature measuring cables are orderly led out of the buried groove and then numbered in sequence.
And further, connecting each temperature sensor with a corresponding temperature display through a temperature measuring cable at intervals of 1 hour, and recording the displayed temperature. The invention has the following beneficial effects:
the method realizes the quantitative relation between the depth of the glass beads for post-treatment of the 3D printing sand mold and the baking time, can accurately master the baking time required by any burying depth, avoids inaccurate master of the baking time, reduces the probability of insufficient curing strength of post-treatment of the 3D printing sand mold caused by inaccurate master of the baking time, and finally improves the casting reliability of the 3D printing sand mold;
through accurate baking time control, the strength of the processed sand mold meets the use requirement, meanwhile, the consistency is also accurately controlled, the strength of each processed sand mold is consistent and sufficient, and the reliability of the sand mold is ensured;
the accurate control of the strength of the sand mold is realized by accurately controlling the baking time, the consistency of the strength of the sand mold is ensured, the risk of weakness of individual parts of the sand mold is avoided, and the casting success rate is improved.
Drawings
Fig. 1 is a schematic overall structural diagram of a 3D post-printing processing temperature measuring device according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of the sensor holder of FIG. 1;
fig. 3 is a schematic structural diagram of the temperature measuring cable in fig. 1.
Detailed Description
As shown in fig. 1, the invention provides a 3D post-printing processing temperature measuring device, which comprises: sensor mount 1, sensor line 2, temperature display 3.
The specific embodiment is as follows:
1. the sensor fixing frame 1 is divided into three layers, and is formed by combining nine transverse plates 11, six vertical plates 13 and four fixing plates 12, as shown in fig. 2. The length 600mm, the width 20mm, the thickness 3mm of diaphragm 11, the length 600mm, the width 20mm, the thickness 5mm of riser 13, the length 600mm, the width 30mm, the height 30mm of fixed plate 12, 3 holes are beaten to every diaphragm 11 and riser 13 equipartition for realize mount equipment and sensor installation, can cover the temperature measurement in size 600 space.
2. Temperature measurement cable: as shown in fig. 1 and 3, each temperature sensor is connected with a sensor wire 2, and one end of the sensor wire 2 can be connected to an external temperature display 3 of the oven to view the temperature of the temperature sensor in real time.
3. The overall structure is arranged: as shown in fig. 1, reference numerals 111 and 137 denote positions of the temperature sensors on the sensor fixing frame 1, each temperature sensor has a corresponding sensor wire 2 led out of the oven, and the sensor wires 2 can be plugged into the temperature display 3 at any time to check the temperature at the temperature sensors.
The invention also provides a 3D printing post-processing temperature measuring method, which comprises the following steps:
1. manufacturing and assembling the sensor fixing frame 1, and uniformly fixing the 27 temperature sensors corresponding to the reference numerals 111-137 on the sensor fixing frame 1, so that the 27 temperature sensors uniformly cover the whole space of the sensor fixing frame 1.
2. Burying the sensor fixing frame 1, putting the sensor fixing frame 1 with the arranged temperature sensors into a glass bead burying groove, burying the sensor fixing frame 1 by using glass beads, setting the burying height to be different heights of 100mm, 200mm, 300mm, 400mm, 500mm and the like, leading temperature measuring lines out of the burying groove in order in the burying process, and numbering the temperature measuring lines in sequence.
3. Opening the oven to set baking temperature, connecting each temperature sensor with a corresponding temperature display at intervals of 1 hour, recording the displayed temperature, observing the temperature rise speed of each position inside the buried glass bead, and the time and the constant temperature value required for the temperature of each position temperature sensor to reach a constant value, and finally determining the temperature condition of the position where each temperature sensor is located and the time required for reaching the required temperature according to the difference between the constant temperature value and the set temperature of the oven.
4. According to different burying heights of the glass beads, the time and the actual temperature of the temperature of each sensor on the sensor fixing frame 1 reaching a constant value are recorded.
5. And forming a database according to the real-time temperature and time measured by the method, finding out the corresponding burying height according to the height of the sand mold, and determining the post-treatment baking temperature and time.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a 3D prints aftertreatment temperature measuring device which characterized in that includes: the temperature measuring device comprises a sensor fixing frame, a temperature measuring cable, a temperature display and a temperature sensor;
the temperature sensors are arranged in a plurality of numbers and are uniformly distributed on the sensor fixing frame in a covering manner;
each temperature sensor is connected with a temperature measuring cable, and the free end of the temperature measuring cable, which is far away from the temperature sensor, is connected with the temperature display and used for checking the temperature of the temperature sensor in real time.
2. The 3D post-printing processing temperature measuring device according to claim 1, wherein the sensor fixing frame comprises a plurality of connecting plates, and a cubic space structure is formed by combining and connecting the connecting plates.
3. The 3D prints aftertreatment temperature measuring device of claim 2, characterized in that, the connecting plate includes diaphragm, riser and fixed plate, evenly offer the hole that is used for the equipment of sensor mount and the temperature sensor installation on diaphragm and the riser.
4. The 3D printing aftertreatment temperature measuring device of claim 3, wherein the transverse plate is 600mm long, 20mm wide and 3mm thick, the vertical plate is 600mm long, 20mm wide and 5mm thick, and the fixing plate is 600mm long, 30mm wide and 30mm high.
5. A method of using the 3D post-printing processing thermometry apparatus of any of claims 1 to 4, comprising: placing the sensor fixing frames with the temperature sensors in the glass bead burying groove, burying the sensor fixing frames by using the glass beads, and leading the temperature measuring cables out of the burying groove;
recording the position data of each temperature sensor buried in the glass beads;
opening the oven to set a preset baking temperature, connecting the temperature sensor with the temperature display at intervals of a set time, recording the displayed temperature, and observing the speed of temperature rise at each position inside the buried glass beads, and the time and constant temperature value required for the temperature sensor at each position to reach a constant temperature value;
determining the temperature condition of the position of each temperature sensor and the time required for reaching the required temperature by referring to the difference between the constant temperature value and the preset temperature;
setting different burying heights of the glass beads, recording the time and the actual temperature when the temperature of the temperature sensor at each position on the sensor fixing frame reaches constant, forming a database according to the measured real-time temperature and time, printing the burying height of the sand mold according to 3D, finding the corresponding burying height, and determining the post-treatment baking temperature and time.
6. The method of 3D post-printing processing thermometry equipment according to claim 5, wherein the data of the position of each temperature sensor buried in the glass bead is recorded by measuring the distance of the outermost temperature sensor from the inner wall of the glass bead burying groove.
7. The method for processing the temperature measuring device after 3D printing according to claim 5, wherein the temperature measuring cables are orderly led out of the buried groove and then numbered in sequence.
8. The method for processing the temperature measuring device after 3D printing according to claim 5, wherein each temperature sensor is connected with a corresponding temperature display through a temperature measuring cable every 1 hour, and the displayed temperature is recorded.
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|---|---|---|---|
| CN202110390358.XA CN113091952B (en) | 2021-04-12 | 2021-04-12 | 3D post-printing processing temperature measuring device and method |
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| CN202110390358.XA CN113091952B (en) | 2021-04-12 | 2021-04-12 | 3D post-printing processing temperature measuring device and method |
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| CN113091952A true CN113091952A (en) | 2021-07-09 |
| CN113091952B CN113091952B (en) | 2023-06-02 |
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